Figure 3: High magnification images of hematoxylin and eosin staining (E′) group E and (G′) group G. Note the obvious fibrous tissue and vessel formation in group E. In group G, newly formed bone is observed immediately below the periosteal layer and multinuclear giant cells are present. Original magnification 200x; scale bar = 50  m. G: multinuclear giant cell; NB: newly formed bone; : periosteal flap; remaining -TCP.